Class 10th | जैव प्रक्रम/Life Process | 1 Hour Special | Photosynthesis & Human Digestive System

Class 10th Reevaluation Process All Details

Class 10 Science| Chapter 6 Life Processes | Important Questions | Revision | Part-1

Class 10 Science| Chapter 6 Life Processes | Important Questions | Revision | Part-2

Puneet gave his class V learners an outline of human body and asked them to draw the digestive system before teaching chapter on food. Puneet wanted to

The diagram shows the effect of an enzyme working in the human digestive system . underset("and temperature at" 37^@C)overset("enzyme at PH1.5)rarr What would reduce the rate of production of amino acids ?

1.62 g of green algae absorbs 6 xx 10^(-3) mol CO_(2) per hour by photosynthesis. If the fixed C atoms are all stroed after photosynthesis as starch (C_(6) H_(10) O_(5))_(n) , how long will it take for the alge to double their own weigth? [Mw "of" (C_(6)H_(10) O_(5))_(n) = 162 n]

(a) Draw a labelled diagram of the human digestive system. With the help of this diagram, describe the process of digestion of food in man (humans). (b) Describe one way in which the small intestine is adapted for the absorption of digested food. (c) What is the special name of the contraction and expansion movement which pushes the food further in our digestive tract (or alimentary canal) ?

1 g of dry green algae absorbs 4.7 times 10^(-3) mole of CO_(2) per hour by photosynthesis. If the fixed carbon atoms were all stored after photosynthesis as starch (C_(6)H_(10) O_(5))_(n) how long would it take for the algae to double their own weight assuming photosynthesis takes place at a constant rate ?

The three processes in a thermodynamic cycle shown in the figure are : Process 1 to 2 is isothermal, Process 2 to 3 is isochoric (volume remains constant), Process 3 to 1 is adiabatic. The total work done by the ideal gas in this cycle is 10 J. The internal energy decreases by 20 J in the isochoric process. The work done by the gas in the adiabatic process is -20 J. The heat added to the system in the isothermal process is